S52.2Fracture of shaft of ulna

S52.2 is the ICD-10-CM diagnosis code for fracture of shaft of ulna. It belongs to category S52 (fracture of forearm), block S50-S59 (injuries to the elbow and forearm) and chapter 19 (injury, poisoning and certain other consequences of external causes). It is a header code, so it can't be reported by itself; one of its 10 subcodes must be used instead.

Within S52 (fracture of forearm), S52.2 is specifically for fracture of shaft of ulna. Related codes cover fracture of upper end of ulna (S52.0), fracture of upper end of radius (S52.1), fracture of shaft of radius (S52.3), fracture of lower end of radius (S52.5), fracture of lower end of ulna (S52.6) and unspecified fracture of forearm (S52.9).

Codes in this range require a 7th character: A for initial encounter for closed fracture, B for initial encounter for open fracture type I or II, C for initial encounter for open fracture type IIIA, IIIB, or IIIC, D for subsequent encounter for closed fracture with routine healing, E for subsequent encounter for open fracture type I or II with routine healing, F for subsequent encounter for open fracture type IIIA, IIIB, or IIIC with routine healing and 10 more. Use placeholder "X" characters to fill any empty positions before the 7th character.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.